Humans, birds and fish can all be affected by PSP toxins. Herbivorous zooplankton is the primary transvector which can in turn transmit the toxin to fish and possibly other marine creatures which consume zooplankton (Baden 1983). The usual route for humans is the consumption of raw or cooked contaminated shellfish.
The definition of obstinate is extremely stubborn and determined to have your own way. An example of obstinate is a person who drives during a severe hurricane despite major warnings not to do so. obstinate. not easily subdued, ended, etc. obstinate.
Sestina Definition. Sestina is a type of a poem that contains six stanzas, each stanza having six lines, while concluding seventh stanza having three lines called as envoi, that is also known as tornada. As sestina derives its name from fixed structure and characteristics, therefore it is as popular as sextain.